At least 1,2-1,5 litre a day up to 2,5-3L probably. Depends on the type and time I have.
I prepare tea in gaiwan or kyusu (if jap green) and I like brewing tea till it tastes like water (multiple infusions).

TeaTom wrote:
All fluids togeather 4-5L a day easy. If I'm really active on the go it could be 8-10L a day. Always feel fresh and hydrated anyway haha

At 10 liters a day you would just be walking back and forth to the restroom, wouldn't you?

In the past I would hike in the Utah desert in the summertime, when it was around 110-115 F out (up to 45 C), and I could easily drink three gallons of water in a day then, just a little over that. It's sort of a different thing hiking out in the sun in desert heat though.

TeaTom wrote:
All fluids togeather 4-5L a day easy. If I'm really active on the go it could be 8-10L a day. Always feel fresh and hydrated anyway haha

At 10 liters a day you would just be walking back and forth to the restroom, wouldn't you?

In the past I would hike in the Utah desert in the summertime, when it was around 110-115 F out (up to 45 C), and I could easily drink three gallons of water in a day then, just a little over that. It's sort of a different thing hiking out in the sun in desert heat though.

It's a good question, if someone would need to ingest more salts and other electrolytes if they were planning to hike in a hot desert and run through a lot more water than normal. I don't remember. Surely I must have taken that into account, and food would have also been an unusual issue related to hiking a lot in a day.

It's been awhile; I haven't lived in the US for nearly a decade, and lived in Hawaii before that, so those Utah hiking days were awhile back. The water consumption just stands out in my mind because carrying around a gallon or more water is an unusual thing to do. In that environment it was about managing heat as well as thirst, since drying out and stopping sweating would be a problem on that other level too.